Long Teng / Mondince aero frame FM126

[Leon1234]

Thanks for the info. Jack also wrote to me saying I installed the cone incorrectly. However, the gap is almost just as big the other way around. I hope things improve with the new parts.

Then you probably still got the old cone race, the new one from mondice or as someone described an original fsa cone racer will do the trick.

[Serge_K]

All right, then let’s get back to our highly scientific work. This time, I didn’t lean the rear wheel against the wall or the doorframe, but rather the frame’s axle itself. That means the rear wheel is essentially removed from the equation. Then I asked the Gemini AI how much the bottom bracket deforms relative to the ground. The result is that the bottom bracket of the FM126 shifts about twice as much in the horizontal direction.

Thank you! You've largely isolated the frame, as far as i can tell (to be fair, i still feel the wheels/tyres should be the same because i feel the rubber moving could be contributing maybe?), and so, it doesn't look good that a brand new aero race frame with fancy fibers (that's not even the lightest version) would be significantly softer than the 18D that you'd expect to be not as rigid as an aero race frame.
Do you plan to reach out to Jack?
The fact that you can feel that the frame is soft sprinting isn't great news at all. Trace Velo on his video of the 18D said the 18D doesnt feel like a "legit" road race bike, so I doubt many people will happily buy an aero frame that's noticeably softer.

[bigApple]

Thank you! You've largely isolated the frame, as far as i can tell (to be fair, i still feel the wheels/tyres should be the same because i feel the rubber moving could be contributing maybe?), and so, it doesn't look good that a brand new aero race frame with fancy fibers (that's not even the lightest version) would be significantly softer than the 18D that you'd expect to be not as rigid as an aero race frame.
Do you plan to reach out to Jack?
The fact that you can feel that the frame is soft sprinting isn't great news at all. Trace Velo on his video of the 18D said the 18D doesnt feel like a "legit" road race bike, so I doubt many people will happily buy an aero frame that's noticeably softer.

I did. Right now he Just answered: "We test it. I will tell the production line"
I will ask again in a few days.

[Tpower59]

Thank you! You've largely isolated the frame, as far as i can tell (to be fair, i still feel the wheels/tyres should be the same because i feel the rubber moving could be contributing maybe?), and so, it doesn't look good that a brand new aero race frame with fancy fibers (that's not even the lightest version) would be significantly softer than the 18D that you'd expect to be not as rigid as an aero race frame.
Do you plan to reach out to Jack?
The fact that you can feel that the frame is soft sprinting isn't great news at all. Trace Velo on his video of the 18D said the 18D doesnt feel like a "legit" road race bike, so I doubt many people will happily buy an aero frame that's noticeably softer.

We like them stiff
https://youtu.be/k5j9YmuCduw?is=EljEfSNfGxeE2lzC

[Leon1234]

Thank you! You've largely isolated the frame, as far as i can tell (to be fair, i still feel the wheels/tyres should be the same because i feel the rubber moving could be contributing maybe?), and so, it doesn't look good that a brand new aero race frame with fancy fibers (that's not even the lightest version) would be significantly softer than the 18D that you'd expect to be not as rigid as an aero race frame.
Do you plan to reach out to Jack?
The fact that you can feel that the frame is soft sprinting isn't great news at all. Trace Velo on his video of the 18D said the 18D doesnt feel like a "legit" road race bike, so I doubt many people will happily buy an aero frame that's noticeably softer.

If it was only the videos I would agree that maybe the softer gravel tires absorb some of the movement but if it is also feelable when riding that sounds shifty. Maybe they will change something in the layup but we will have to see.

[bigApple]

Final answer:
It is safe
No worry
We have done the ISO standard test

Everyone can draw their own conclusions.
I'm looking for a new frame that fits my 80 kg. Anyone interested in the FM126? I'll give you a good price 😁

Funny thing is there advertising:
Why Choose the FM126 Premium Aero Carbon Frameset?
[...] high performance aero frame delivers race-winning stiffness. [...]

[Leon1234]

Final answer:
It is safe
No worry
We have done the ISO standard test

Everyone can draw their own conclusions.
I'm looking for a new frame that fits my 80 kg. Anyone interested in the FM126? I'll give you a good price 😁

Funny thing is there advertising:
Why Choose the FM126 Premium Aero Carbon Frameset?
[...] high performance aero frame delivers race-winning stiffness. [...]

You could have a look at a thread for a new aero roadbike by yishun. Looks similar to an aeroad and from earlier revies the bikes are very robust. It is not confirmed if they do b2c yet.

[BeR]

You could have a look at a thread for a new aero roadbike by yishun. Looks similar to an aeroad and from earlier revies the bikes are very robust. It is not confirmed if they do b2c yet.

They don't. As a consequence, the topic as been closed.

[vtlyz]

Reached out to Jack for inquiries about having a size 49 made but they don't have any molds for that. Unfortunate as I was debating between this and the SC-R55D...

[gribs]

They don't. As a consequence, the topic as been closed.

It would have been helpful to keep the thread alive but with a note they weren't selling direct to consumer.

[Lukas_W]

Hi, I could use your help again. The new headset and crown race arrived today. There were also two plastic parts in the package whose purpose I don't understand. Can anyone tell me what they are for and where I should install them?

[fat-tony]

Hi, I could use your help again. The new headset and crown race arrived today. There were also two plastic parts in the package whose purpose I don't understand. Can anyone tell me what they are for and where I should install them?

Its the battery holder

[Rolle2k]

Top headset bearing is 8mm 52/40 - but is it 36/45 deg or 45/45 deg?
Is the headset compression ring included good, or is there any reason to swap for a FSA in aluminum?

[bigApple]

If I remember correctly, the original Mondince headset bearings were 45/45 on the top and bottom. It should actually be written on the bearing.

[kungie]

Ok I haven't ridden it much, but I've finally stopped spilling mineral oil everywhere and have it assembled.
58cm and whatever they call the lighter weight option, which is irrelevant as I painted it.

Good first impressions once the correct pieces have actually been delivered. In hindsight, I can't be upset for the delay, it was my choice to be the trial subject for a new frame. Wrong battery holder, wrong bearings, and wrong crown race made me realize how different of an experience buying a frame direct from a factory is. I'm a little surprised that the person manufacturing the frame didn't want to assemble one and take it for a spin, honestly. I still stand by my decision to buy a frame without reviews, as I bought this knowing that the frame would kind of be a gamble. I didn't go for a expensive or ultralight build as a result. I got everything together for just under $2000, buying parts over time since last November. 8.4kg as pictured (cage and computer mounts, pedals).

I did my own version of the stiffness on the wall test, which seems consistent with what's been described. I'm more of an endurance/long distance rider, so I might not actually be able to hit the watts on the road to notice, but I'll update when I've done a sprint workout. My specialized diverge (fact 9r carbon) flexed quite a bit more using the same test, but that bike is known to be quite soft and since there is so much more clearance, I am more worried about the fm126.

I had my LBS cut the fork before I got the correct crown race and lower bearing, which means the fork is just a bit too long. I'll probably have to find a spacer, but if anyone has a link to a slightly lifted top tap on Aliexpress, I'd appreciate the link!